JP2010241611A5 - - Google Patents

Claims (43)

x ≒ 2, y ≒ 2, z pyrochlore phase having ≒ 7 empirical formula A _x B _y O _z and r> 0, s> Ceramic Powder comprising a secondary oxide C _r O _s 0.   The ceramic powder according to claim 1, wherein A is gadolinium (Gd).   The ceramic powder according to claim 1 or 2, wherein B is hafnium (Hf).   The ceramic powder according to claim 1, 2 or 3, wherein B is zirconium (Zr).   The ceramic powder according to claim 1, 2, 3 or 4, wherein C ≠ B.   The ceramic powder according to claim 1, 2, 3 or 4, wherein C = B.   The ceramic powder according to claim 1, 2, 3, 4, 5 or 6, wherein C is hafnium (Hf).   The ceramic powder according to claim 1, wherein C is zirconium (Zr). The ceramic powder according to claim 1, 5, 6, 7 or 8, comprising a maximum of 3 % by weight of a secondary oxide. The ceramic powder according to claim 1, 5, 6, 7 or 8, comprising a secondary oxide of a maximum of 8 % by weight. The ceramic powder according to claim 1, 7 or 9, wherein the secondary oxide is hafnium oxide (HfO ₂ ). The ceramic powder according to claim 1, 8 or 10, wherein the secondary oxide is zirconium oxide (ZrO ₂ ). As a sintering aid, 0.05 wt% or less silicon oxide, 0.1 wt% or less calcium oxide, 0.1 wt% or less magnesium oxide, 0.1 wt% or less iron oxide, 0.1 wt% The ceramic powder according to any one of claims 1 to 12, comprising aluminum oxide in an amount of not more than% and titanium oxide in an amount of not more than 0.08% by weight. The ceramic powder according to claim 1, 2, 3 or 4, comprising at least 92 % by weight of a pyrochlore phase. The ceramic powder according to any one of claims 1 to 14, comprising only one pyrochlore phase. The ceramic powder according to any one of claims 1 to 14, comprising only two pyrochlore phases. The ceramic powder according to any one of claims 1 to 16, comprising a mixed crystal as a pyrochlore phase. Only one secondary oxide C _r ceramic powder according to any one of O _s comprising the claims 1-17. The ceramic powder according to claim 1, comprising only two secondary oxides C _r O _s and C ′ _{r ′} O _{s ′} . One or more secondary oxide, as simply oxide, ceramic powder according to any one of claims 1 to 19 present. The ceramic powder according to any one of claims 1 to 19, wherein the one or more secondary oxides are present as completely mixed crystals. The ceramic powder according to any one of claims 1 to 19, wherein one or a plurality of secondary oxides are present both as oxides and as mixed crystals. Pyrochlore phase A ₂ B ₂ O _7, the ceramic powder according to any one of claims 1 to 22 consisting of oxide Mono及 beauty sintering aid. Free of sintering aid according to claim 13, the ceramic powder according to any one of claims 1 to 22 consisting of the pyrochlore phase and secondary oxide C _r O _s. Ceramic powder or al Manufacturing ceramic layer according to any one of claims 1 to 24 (13). A layer structure comprising the substrate (4) and the ceramic layer (13 ) according to claim 25. 27. Layer structure according to claim 26, comprising a metal bond layer (7 ) . An antifoaming agent, an inner side ceramic layer (10), the ceramic layer (13) is an inner ceramic layer (10) present on claim 26 or 27, wherein the layer system. 29. Layer structure according to claim 28, wherein the inner layer (10) has a layer thickness of 10% to 50 % of the total layer thickness of the inner layer (10) and the outer layer (13).   29. Layer structure according to claim 28, wherein the inner layer (10) has a layer thickness of 10% to 30% of the total layer thickness of the inner layer (10) and the outer layer (13).   29. Layer structure according to claim 28, wherein the inner layer (10) has a layer thickness of 20% to 40% of the total layer thickness of the inner layer (10) and the outer layer (13). 29. Layer structure according to claim 28, wherein the inner layer (10) has a layer thickness of 50% to 90 % of the total layer thickness of the inner layer (10) and the outer layer (13).   29. Layer structure according to claim 28, wherein the inner layer (10) has a layer thickness of 70% to 90% of the total layer thickness of the inner layer (10) and the outer layer (13).   29. Layer structure according to claim 28, wherein the inner layer (10) has a layer thickness of 60% to 80% of the total layer thickness of the inner layer (10) and the outer layer (13). The inner layer (10) is, the thickness of 100Myuemu～200myu m, any one of claims 28 to 34 having a layer system according. The metal bonding layer (7) is 11% to 13% cobalt, 20% to 22% chromium, 10.5% to 11.5% aluminum, 0.3% to 0.5% by weight. yttrium, 1.5% to 2.5% of rhenium and 請 Motomeko 27, wherein the layer systems that have a composition of balance nickel. The metal bonding layer (7) is 24% to 26% cobalt, 16% to 18% chromium, 9.5% to 11% aluminum, 0.3% to 0.5% yttrium in weight%. 1% to 1.8% of rhenium and 請 Motomeko 27, wherein the layer systems that have a composition of balance nickel.   The layer structure according to claim 28, wherein the yttrium-stabilized zirconium oxide layer contains 6 wt% to 8 wt% yttrium. 36. Layer structure according to any one of claims 28 to 35, wherein the total layer thickness of the inner layer (10) and the outer layer (13) is at least 300 [mu] m . 36. The layer structure according to any one of claims 28 to 35, wherein the total layer thickness of the inner layer (10) and the outer layer (13) is at least 450 [mu] m . Total layer thickness layer system according to any one of claims 28 to 35 which is the maximum 600 [mu] m. The layer structure according to any one of claims 26 to 41, comprising a substrate (4), a metal layer (7), an inner ceramic layer (10) and an outer ceramic layer (13). Substrate (4), according to any one of claims 26 to 42 comprising a metal layer (7), an oxide layer on the metal layer (7), an inner ceramic layer (10) and the outer ceramic layer (13) Layered organization.